Machine for dressing conical tapering surfaces



UNITED STATES PATENT OFFICE.

PAUL PECKHAM, OF PETERSHAM, MASSACHUSETTS.

MACHINE FOR DRESSING CONICAL TAPERING- SUB/FACES.

Speccaton of Letters Patent No. 13,180, dated July 3, 1855.

To all whom t may concern Be it known that I, PAUL PECKHAM, ofPetersham, in the county of Worcester and State of Massachusetts, haveinvented a Machine for Dressing Tapering Sticks; and I do hereby declarethat the same is fully described and represented in the follo-wingspecification and the accompanying drawings, letters, figures, andreferences thereof.

The purpose of my invention is to dress or round a tapering stick ofwood, so that while it has one flat surface, the rest of it, intransverse section, may be in the form of a segment of a circle.

My machine is intended particularly for rounding ladder poles or sticksto the form shown in Figures l, 2, and 3, of the drawings, which denotetop and end views of such a stick when so dressed. Fig. Il, is a plan ofmy said machine. Fig. 5, is a vertical and longitudinal section of it.Fig. 6, is an end view of it.

In t-hese drawings, last mentioned, A, exhibits the frame of themachine, on which is supported in tubular bearings, a tubular rotarycutter stock B, whose left end is provided with one or more cutters, a,a. Through the bore, b, of this cutter stock a bar or rest, C, isextended, the same being supported by a rocker frame D, which is hingedto the frame A, as seen at d, d, and hasv a screw, F, applied to it soas to enable an attendant to either elevate it above or depress ittoward the top surface of the frame A. A roller, Gr, to keep the stockdown to the rest may be applied to the frame, A, and over the rest asseen in Figs. 4, and 5.

In dressing a stick the cutter stock is put in revolution on its aXis bya belt applied to a pulley, H, fixed to such stock. The tapering stickis then introduced with its smaller end foremost into the mouth of thebore of the stock, the Hatside of the stick being supported on the restC. This done, the said rest is elevated so as to raise the stick up tothe cutters far enough for them to suiiiciently reduce the upper surfaceof the interior end of the stick. The stick is next forced forward intoand through the bore, and the rest is depressed as the thickness of thestick increases to-ward the superior end, the stick being graduallyrounded so that in Whatever part of it a section be taken transverselyto the stick, such section shall present the form of the segment of acircle.

My machine is particularly intended for rounding the side pieces ofladders. In Figs. 4 and 5, the stick is represented in red lines.

I claim- The arrangement and application of the depressing rest C, withrespect to the hollow tubular cutter stock substantially as described soas to enable a perso-n to dress or round a tapering stick of wood inmanner as specified.

In testimony whereof I have hereunto set my signature this 30th day ofApril A. D.

PAUL PECKHAM.

Vitnesses:

GEORGE WHITE, JARED WEED.

